diff --git a/submodules/lite-youtube-embed b/submodules/lite-youtube-embed
index 217b3cd..1b88628 160000
--- a/submodules/lite-youtube-embed
+++ b/submodules/lite-youtube-embed
@@ -1 +1 @@
-Subproject commit 217b3cde1aa44ab943c99fc17b4cca7d6b3613f3
+Subproject commit 1b88628081a94dcb99b4adefd704827a8e8faa31
diff --git a/submodules/materialize b/submodules/materialize
index 93e673c..b526fa5 160000
--- a/submodules/materialize
+++ b/submodules/materialize
@@ -1 +1 @@
-Subproject commit 93e673c19fd6e1dee2b1dc77ac0e7c95fd39fbe9
+Subproject commit b526fa5f017f5e0a5f7839cb84e4eb5b531b4478
diff --git a/submodules/parsedown b/submodules/parsedown
index 1ff0382..c9dc49f 160000
--- a/submodules/parsedown
+++ b/submodules/parsedown
@@ -1 +1 @@
-Subproject commit 1ff038273949df7d6a455352659a878f3c89b29c
+Subproject commit c9dc49f68f7bd14e5aa107d86a08ce59203f02ee
diff --git a/submodules/zopfli b/submodules/zopfli
index 831773b..ccf9f05 160000
--- a/submodules/zopfli
+++ b/submodules/zopfli
@@ -1 +1 @@
-Subproject commit 831773bc28e318b91a3255fa12c9fcde1606058b
+Subproject commit ccf9f0588d4a4509cb1040310ec122243e670ee6